Does anyone know of a header set that will work? 1972 350 gen I, th350 trans,power assist steering, locking steering column. Have checked with Summit Racing, and have found either steering, heads, spark plugs or steering pump bracket willnot allow headers to be used. There are existing headers, and I think removal, blasting and coating will be easier. For anyone who wants more info: on the cap near adjustment screw is 7812145, and on body column end top side is 271. There are more, but time has made them unreadable.Thank you for your time and support.